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- package util;
- public class Pair<A, B> {
- private A first;
- private B second;
- public Pair(A first, B second) {
- super();
- this.first = first;
- this.second = second;
- }
- public int hashCode() {
- int hashFirst = first != null ? first.hashCode() : 0;
- int hashSecond = second != null ? second.hashCode() : 0;
- return (hashFirst + hashSecond) * hashSecond + hashFirst;
- }
- public boolean equals(Object other) {
- if (other instanceof Pair) {
- Pair otherPair = (Pair) other;
- return
- ((this.first == otherPair.first ||
- (this.first != null && otherPair.first != null &&
- this.first.equals(otherPair.first))) &&
- (this.second == otherPair.second ||
- (this.second != null && otherPair.second != null &&
- this.second.equals(otherPair.second))));
- }
- return false;
- }
- public String toString() {
- return "(" + first + ", " + second + ")";
- }
- public A getFirst() {
- return first;
- }
- public void setFirst(A first) {
- this.first = first;
- }
- public B getSecond() {
- return second;
- }
- public void setSecond(B second) {
- this.second = second;
- }
- }
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